Grating



Feb. 14, 1928. 1,658,901

. w. l.. PATTlsoN GRATING Filed D60. 17. 1925 I l Y y ffp'; ATTURNEY.

Patented Feb. 14, 1928.

WILLIAM L. rafrrison or 'KANsAseirm Missonni.

kezaaciiner.

Application filed December 17, 1926. Serial No. 155,396.

My invention relates to improvements in gratings, such as are commonly used vfor flooring.

vIt relates particularly to the type of gratings havinglongitudinal bars disposed edge up and tied together by cross braces.

One of the objects of my invention is to provide a novel grating of the kind described having novel means for bracing the longitudinal bars, which is simple, cheap and easy to make ind assemble, which is strong, light, durable and not liable to break or become distorted with use, and which affords a maximum of space for the transmission of light therethrough.

he novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing, which il-- lustrates the preferred embodiment of my invention,

Fig. l is a plan .view of my improved grating. Fig. 2 Fig. l.

is a section on the linek S24-2 of Fig. V3 is a crosssection on the line 3--3r of Fig. 1.

Fig. 4L is a perspective view of one of the brace members.

^ Similar reference characters designate similar parts inthe different views. j

The grating is provided with longitudinal bars l, disposed edge up, preferably parallel with each other.

Between each pair of adjacent bars l are disposed a plurality of angle brace members, the end portions 2 and 3 of*k which are at right angles to and extend horizontallyin opposite directions from a transverse portion Ll, after the manner of commercial Z angles used in steel structural work.

The brace members between each pair of bars l have their end portions 2 and 3 each provided with a transverse hole 5, Fig. 4, adapted to register with a transverse hole in the adjacent bar 1 and to receive therethrough a rivet 6, which also extends through the end portion of an adjacent brace memberat the opposite side of the bar. Adjacent brace members between the dierent pair of bars l have their transverse portions 4.- alig'ning with each other, as shown in Fig. 1, the brace members being disposed so that the rivets 6 connect likeend portions of adjacent brace members, that is, the end portions 2 with the end portions 2 and the end portions 3 with the end portions 3 of adjacent brace members.`

By having the transverse port-ions l of adjacent brace members aligned with each other, a rigid structure is effected, and by having the rivets 6 which fasten the end por tions 2 out of alignment with the rivets n which fasten together the end portions 3,

lmaximum of light space is afforded for the transmission of lightthrough the grating.

while affording a maximum of strength, and

a structure which is relatively light and inexpensive for material and transportation charges, and economical to manufacture.

I do not limit my invention to the structure shown and described,"as modifications,

within the scope of the appended claims. may bek made without departing from the spirit of my invention.

What I claim is l l. A grating of the kind described comprising longitudinal bars, and brace mem bers independent of each other disposed bctween thebars -of each pair of said longitudinal bars, each bracemember havingV a transverse portion aligning with the transverseportions of adjacent brace members located between the otherr vlpairs of bars, each brace member having itsgend portions atV right anglesk to. and extending in opposite directions from its transverse portion, said end portions of said brace members being respectively fastened to theL adjacent bars, and like end portions of adjacent brace inemposite sides ofthe bars to which they are fastened.

bers being fastened together and to the opof adjacent brace members which are located between the other pairs of said bars, each hracememher having its end portions at 'right angles to and extending in opposite directions from its transverse portion, each end portion having a transverse hole, like end portions of adjacent brace members being disposed at opposite sides of the bars against Which they hear, and rivets extencling' through the holes in said end portions and the adjacent bars and( fastening like end portions to each other and to the 21djncent bars. Y i p In testimony whereof I have signed my name to this specification.

WLLIAM L. PATTISON. 

